<!--
 * @Author: your name
 * @Date: 2022-01-19 15:17:31
 * @LastEditTime: 2022-01-19 16:47:13
 * @LastEditors: DESKTOP-EH1PJNP
 * @Description: 优先级
 * @FilePath: \xxtx_ui-demod:\Qweb\html\html\day03\1-优先级.html
-->
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>优先级</title>
    <style>
        ul.menu{
            color: darkmagenta;
        }
        ul.menu > li.menu_item{
            color: crimson;
        }
        ul.menu > li.menu_item > ul.sub_menu{
            color: cadetblue;
        }
        ul.menu > li.menu_item > ul.sub_menu > li{
            color: aqua;
        }
        #introduce{
            color: tomato;
        }
    </style>
</head>
   <body>
        <div class="tyut">
              <!-- 头部 -->
              <header>
                  <div class="first_line"></div>
                  <div class="second_line">
                      <div class="logo">logo</div>
                      <ul class="menu">
                          <li class="menu_item">
                            <span>学校概况</span>
                            <ul class="sub_menu">
                                <li id="introduce">学校简介</li>
                                <li id="history">历史沿革</li>
                            </ul>
                          </li>
                          <li class="menu_item">
                            <span>人才培养</span>
                            <ul class="sub_menu">
                                <li>本科生教育</li>
                                <li>研究生教育</li>
                            </ul>
                          </li>
                          <li class="menu_item">
      
                          </li>
                      </ul>
                  </div>
              </header>
              <!-- /头部 -->
              <!-- 内容 -->
              <!-- /内容 -->
              <footer>
                  <div class="first_line"></div>
                  <address>地址</address>
              </footer>
      
        </div>
          
   </body>
</html>